When kin correlations are not squared.
Bouchard
T J
TJ
Lykken
D T
DT
McGue
M
M
Segal
N
N
Tellegen
A
A
D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D007360:Intelligence; D007361:Intelligence Tests; D014430:Twins, Monozygotic / Q000235:genetics*